Lathe-drill press



Dec. 24, 1940. w. F. TAYLOR 2,226,029

LATHE-DRILL PRESS Original Filed May 11, 1938 4 Sheets-Sheet l IN VEN T 0)? WILLIAM E. TAYLOR, gr

A T TORNE Y5 Dec. 24, 1940. w j- TAYLOR 2,226,029

LATHE-DRILL PRESS Original Filed May 11, 1938 4 Sheets-Sheet 2 Dec. 24, 1940.' w. F. TAYLOR LATHE-DRILL PRESS Original Filed May 11, 1938 4 Sheets-Sheet 3 r-n F I 11v VENTOR WILLIAM F. TAYLOR,

A TTORNE Y6 Y B W Dec. 24, 1940. w. F. TAYLOR 2,226,029

LATHE-DRILL PREYSS Original Filed May 11, 1938 4 Sheets-Sheet 4 Wm M. Mm H H W4 r v M a. q. m E E .m x. m m L1:

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Patented Dec. 24,1940 I UNITED STATES LATHE mm PRESS William F. Taylor, Tulsa, Okla.

Application May 11, 1938, Serial No. 207,339 Renewed June 10, 1939 9 Claims. (01. 29-27) This invention relates to a dual machine, embodying a composite lathe-drill press, which in one position constitutes a lathe, and in the other position comprises a drill press. Such is the first object of this invention, that is, to provide these two kinds of machines with the same major features used in both, but occupying one position, say for the lathe, and another position for the drill press.

Again, this invention comprehends in the lathe structure certain convertible features relating to the headstock, the tool rest and the tailstock. Such is the second object of this invention.

Again, when the apparatus is converted intoa drill press it comprises, besides the main features that are also in the lathe, certain features peculiar to the drill press, as will hereinafter appear more in detail. Such is the third object of the invention.

Again referring to the drill, one of its important objects is to provide 8. raising lever and a socket within which the sphere on the support pipe fits, with the lever operable by the foot to make a vertical adjustment of the support pipe. Such is'the fourth object of the invention.

With the attachments shown in the drawings and described in the specification it is possible to perform a great variety of production operations m'th only one motor, thus accomplishing a considerable saving in shop tool investment. Such is the fifth object of this invention.

Another important benefit of this combination is the conservation of floor space, an item of importance in the average workshop. Such is the sixth object of my invention.

Another advantage of this combination, and a considerable one, is the fact that by its peculiar construction the conversion of the machine from lathe to drill press position is made extremely easy and convenient. As a matter of fact, the counterbalance feature of this combination is one of its most important features and I believe is unique in tools of this general class. Such is the seventh object of my invention.

Another important object is the provision of the groove in the round support pipe and the age assembly which make possible extreme accuracy in tailstock settings. This is essential in the lathe work. Such is the eighth object of my invention.

In the accompanying drawings:

Figure 1 is a side elevation of the essentials of a lathe with my improvements applied thereto, with a portion of the tailstock in section to show tllifinplnion and rack cut on the surface of the q Figure 2 is a side elevation of the drill press with the support pipe vertical instead of horizontal and the belt pulleys in a right angle relative position.

Figure 2ais a separate view of the raising lever and its socket plate. Figure 3 is an enlarged side view of the tailstock of the lathe with a portion in section to show, on this scale, the pinion and the rack cut on the surface of the quill.

Figure 4 is a side elevation of the tailstock and the relative position of the adjusting gage block assembly.

Figure 5 is an enlarged side elevation of the drill press table, tailstock and drill press depth gage assembly.

Figure 6 is a right-side elevation of the hinge assembly for the combination with the assembly in lathe position.

Figure 7 is an end elevation of the hinge assembly.

Figure 8 is a top plan view of the tool rest locking sleeve.

Figure 9 is a side view of the adjusting pinion, pinion cover and spindle.

Figure 10 is a side elevation of a part of the support pipe, in drill press position.

Figure 11 is a side view of the foot-piece and the counterbalance in drill press position.

Figure 12 is a side elevation of the support pipe, the counterbalance and the foot assembly in position for conversion from drill to lathe position. I

Figure 13 is a right side elevation of the tool rest, lock sleeve assembly.

Figure 14 is an end view of the tool rest locking sleeve assembly.

Figure 15 is an enlarged detail side view of the headstock, showing more particularly the motor support plate, the pulley casing and the headstock.

Figure 16 is an end elevation of one pulley, the left end of the support pipe, the sustaining part of the casing for said support pipe, and a left end view of the headstock with pulley casing in place.

Figure 17 is a top plan or bird's-eye view of the motor and the headstock, showing the relative location of the support pipe and motor and also the motor support plate as well as the grooved pulleys, headstock casting and a small part of the support pipe.

Figure 18 is a left end rear view of the motor support plate, the motor, the belt, the headstock spindle and the headstock casting without the pulley casing. y

Figure 19 is a detail view of the motor support shown in the assembly of Figure 18.

Figure 20 is a detail plan view of the bracket which supports the motor and motor pulley.

Figure 21 is a view of the gage block assembly with the support pipe, both mounted on the tailstock. with adjusting devices in the lower part of the view.

Figure 22 is a 'plan view of the drill press table, showing, between two spacer lugs, the support tube with the groove.

Figure 23 is a vertical side view of parts of the drill press, namely, a section of the support pipe, a part of the tailstock with the rack and pinion, with the table which belongs to the drill press, which table may be adjusted up and down through the handle, pinion and rack, which latter screws into the table.

Figure 24 is a similar view to Figure 23 in that Figure 24 also shows a portion of the support pipe, the tailstock, and the handle, pinion and rack, with the tailstock adjusted as these parts appear in Figure 1 except that in the latter figure the tailstock element is vertical and in Figure 24 it is horizontal.

Figure 25 is a detail of the tool rest.

Figure 26 is a view of the right side of the tool rest slide and the depth-gage scale.

Figure2'l is a like view of the left side of the tool rest slide and the depth gage scale.

Figure 28 is a top plan view of the tool rest slide.

Lathe I shall first set forth in this specification my lathe and all parts relating to it, and after this is done, I shall do likewise with respect to the drill press. And when I am dealing with the drill press, I shall bring out the features of the lathe which are utilized in the building or making of the drill.

Referring now to the lathe, it is comprised of a frame having legs 1 with a brace 2 and a strong bar 3. These parts are connected together in any conventional way, say by screws or rivets 4, 5, and 8.

.On this frame is mounted the headstock 8, a single casting carrying a headstock spindle 22 (Figure 15), said headstock being secured at its lower end to the frame by bolts 10, and also carrying a casing 12 (Figure 15) Adjacent the headstock is a motor I4, the base i of the motor being bolted as seenat 16 to a support 11. In Figure 15, the projections 20 from the support 11 are shown with the clamping bolt and nut 2 I. At 18 is shown in Figure 15 the loop end of the support 11. This support is best seen in Figures 18 and 19, and extends into the loop or ring 18 which is mounted on the support pipe 19.

The support pipe 19 is a very important element in this invention. It extends, as shown particularly in Figure 1 from the ball 19a on the right to the numeral 30 on the left. This ball which adds heft to the support pipe functions in the drill press branch of this apparatus, as will be stated when we come to describe thedrill press feature or part of this apparatus. The support pipe I! also passes through a hinge arm 19b, pivoted to the bench on the hinge bolt 190, which also functions in the drill press branch of this invention,

Figure 1 of the drawings shows that the supportspipe 18 extends entirely through and beyond the headstock and its outer or left end accommodates the locking sleeve 18 onthe motorsupport place l1. The support pipe I8 is provided with a groove He. 1

Referring back to the loop 18, it has projections 20 which are clamped together by the bolt 2i and its nut so as to bind firmly the loop,"

and the tube I! (see Figure 18).

The headstock spindle 22 is mounted in the headstock 8 in bearings 23, 23a, 221), three bearings. It will be seen from Figure 15 that the driven grooved pulley 24 is mounted on the headstock spindle 22 and that the driving grooved pulley 25 is mounted on the motor shaft 26. The driven pulley. 24 is connected with the driving pulley 25 in Figures 15 and 17 by a v-belt 21. In Figure 17 there is shown the motor and its housing, and also the pulleys 24 and 25. In Figure 17 there is also shown the motor l4 mounted on a plate II which is a part of the bracket 26a. This plate l1 goes below the motor 14 to support the motor. in bolting the plate II to the motor 14.

The portion 18 of the bracket 26a is mounted on the end of the support pipe 19. The support pipe l9 terminates at 211 as shown in Figure 17. A bearing plate and its bolts to hold the cap are shown at 23 to sustain the left portion of the spindle 22 of the headstock. Another bearing plate, with its fastening bolts, is shown at 23a and still another bearing plate at 23b to sustain the right-hand end of the spindle 22. Part of the headstock casting 8 has notches for the bolts I0. These features are best shown in Figure 1'1.

Referring to the next feature of the lathe, we call attention to the tool rest 25 (Figure 1) having a spindle 36 which fits in a sleeve 31, the latter mounted on the tool holder slide 28. These devices are mounted on a clamping sleeve 29 and held by a nut and bolt 40, and having a clamping bolt 4|, whereby this slide can be placed and clamped anywhere along the lathe between the headstock and the tailstock.

We turn now to the tailstock of the lathe. It is comprised of an upright casting 42 mounted at its lower end to slide to any position on the support pipe 19, to be further described presently. A conventional keybolt is indicated at 42b in Figure 1, to keep the quill 42 from turning in the tailstock 42.

The tailstock quill is designated 43 and carries within it a removable center pin 44. The tailstock 42 carries within its body an adjusting pinion 45 which meshes with a rack 46, cut on the outside surface of the quill 43. These devices are used to make adjustments of the position of the quill 42 within the tailstock with reference to the position of the spindle in the headstock. The pinion 45 is operated by the handle 41.

The tailstock 42 also carries a gage bar 41a, as seen in Figures 1, 3 and 4. This rod or bar -or bolt is pivoted at 48. In Figure 4 is shown a spring 49 which merely holds the gage block it in contact with the support pipe IS. The gage bolt 41a carries a gage block ill adjusted up or down by adjusting nuts 51 and the tailstock 42 has a slot 42a to give the g ge block 5' access to the groove lie. As seen in Figure 21 the tailstock is also equipped with a lock bolt I2 and its handle and with a set screw 52 which secures the handle 41 on the pinion shaft 45a.

when it is desired to use the combination as The slots 28 in the plate 11 are used a lathe and to do work between centers, it is essential that said centers be accurately aligned.

To do this, it is merely necessary to move the tailstock 42 to such position on the pipe I! as will enable the operator to align perfectly the center of the quill of the tailstock with the center of the spindle of the headstock. At this point the tailstock 42 is locked on the pipe is by the clamp 54 (Figure 21), 54 being an integral part of 42. This clamp 54 is mounted on the pipe I! and held by a nut and bolt 55. The bolt passes through lugs 56.

The gage block 50 is then adjusted by nuts ii to snugly engage the groove lie at which point the gage block is locked by either or both of the nuts 5i. The tailstock 42 may then be loosened by loosening the clamp 54 and the tailstock may then be moved longitudinally to any point on the pipe l9, and the spindle of the headstock and the quill of the tailstock will be perfectly aligned with each other by re-engaging the block iii in the groove i9e, at which point the tailstock 42 should be locked to the support pipe I! by tightening the bolt 55.

Except to take up wear, no further adjustment of the gage block is necessary. Extremely accurate tailstock settings are accomplished by thi mechanism, even in the dark. 1

Drill press Thus far, I have set forth the construction and operation of the lathe branch'of this invention, and will now turn to the drill press branch in the construction of which the major parts-or elements of the lathe will be utilized, but will occupy a different position as' seen in Figures 2 and 5, which figures have been enumerated in the list of figures composing all the drawings.

To avoid confusion, I shall employ diiferent reference numerals to designate the parts as they appear in the drill press branch as distinguished from the numerals used in connection with the lathe branch.

In Figure 2, showing the drill press assembly, the numeral 10 designates the support pipe vertically standing on end, the lower end of which has a sphere 1| which rests on a bearing. Preferably this bearing consists of a base 12 adapted to be fastened to the floor or other foundation by one or more bolts 13. A lever 14 is mounted at 15 and pivoted to the base 12. By placing weight, as ones foot, to the lever, I can raise and lower the support as occasion may require. The V- groove in the pipe 10 is designated by the numeral 10a.

The colunm or support pipe 10 fits a hinge arm 16. This arm is pivoted at 11 to a bracket forming a part of the bench 18. This bench includes a leg 19 which is shown, and other suitable legs, such as shown in Figure 1, being merely left oif. A part of the drill press shown at 2 in Figure 1 is designated in Figure 2.

In Figure 2a I have shown the base 12 and the lever 14 apart from the position of the ball.

In Figure 23, the numeral 101) is the tailstock casting, 10c designates the pinion, 10d indicates the spindle for the drill press table 84. The numeral 1ile shows the handle. The spindle 10d has a rack cut on one surface which rack meshes with the pinion 100. The spindle 10d is permanently attached to the drill-press table 84.

In converting the lathe to the drill-press it is merely necessary to remove the quill 41 from the tailstock 42, and in the hole thus vacated insert the spindle 10d on which is permanently mounted the drill-press table 8|. The lugs Ila, as shown in Figure 22, keep the table I in position or against losing its position when it is mounted, as seen in Figure 23, on the spindle 1iid.

Again referring to Figure 2, the tailstock 10b isv supplied with an adjusting handle 1110 connected with a pinion 45 (Figure 9). This device maybe used in any vertical movement that might become necessary in the use of the drill table ll. Attached to the spindle 10d is this drillpress table 84. This drill-press table I is secured to the tailstock casting 1.1) (Figure 23) by means of 1M being inserted in the hole vacated by the removal of thequill 43, as stated above. The drill-press depth scal carries numerals I, 2, 3 and 4, etc., as best shown in Figure 5. The depth scale slide is designated I. and is connected to a clamp sleeve 81 by a bolt It. This sleeve is clamped to the upright pipe 1|. The upper end of the pipe carries a pulley casing "-in which is mounted one of the belt pulleys shown at 9 l The part is merely the foot-piece to the head stock 8. q

The motor 02 is secured by plate l1 (Figure 20) as shown in Figure 2 to the upper portion of the pipe 10. And the pulley 94 is mounted on the motor shaft as seen at 95. This pulley 94 is the pulley used in connection with the lathe, designated 25 in Figure 15. A belt 98. the same as the V-belt 21 in Figure 18, connects the pulley 94 and the headstock pulley 9|.

In Figure 28 I show a top plan view of the same tool rest slide as is shown in Figures 26 and 27 with its lock-bolt device 91.

Thus it will be seen that vital and indispensable parts of the lathe constitute the major parts in the drill press, as this invention comprehends a lathe-drill press entirety.

My drill reverses the usual procedure in drill presspractice, that is, my machine moves the work into the drill. The usual practice is to move the drill down to the work. I find that my method reduces vibration inherent in a work spindle operating in a quill. I explain this by the fact that high drill spindle speeds set up a vibration which is transmitted to the movable quill which, being loose in its seat, magnifies this vibration. In my form of drill press, the tool is supported more firmly and has therefore less tendency to whip, a very serious drawback in present drills when used at routing speeds, which are very high.

Note the simple method of attaching the motor on the left end of the support pipe. By merely placing the clamping sleeve It on the support pipe I! and connecting the headstock and motor pulleys by belt 21, the motor, in lathe position, fioats" or maintains an automatic tension on the belt. In changing to the drill press position it is only necessary to tighten the clamp bolt 2|, Figure 19, to have a fixed belt tension. My form of lathe can easily be changed to turn outboard" tu'rnings by merely changing the motor support plate i1 to the right end of the headstock I.

It will be understood that the above-described structure is merely illustrative of the manner in which the principle of my invention may be utilized, and that I desire to comprehend within my invention such modifications as come within the scope of the claims and the invention.

Having thus fully described my invention, what I claim is new and desire to secure by Letters Patent, is:

1. In a dual machine, lathe parts comprising a tailstock, a quill mounted therein, a support pipe on which the tailstock is mounted, said pipe having a longitudinal slot, a gage bar mounted in the tailstock and a gage block carried by said bar and adapted to enter said slot, a rack integral with the quill and adapted to adjust the quill back and forth, and an operable pinion mounted in the tailstock and adapted to I engage with said rack.

2. In a dual machine, drill press parts comprising a support pipe, a base at the lower end of the pipe, a lever to raise the supp rt Pipe from the base, and an upper support for said pipe, to keep it in a substantially vertical position,

a drill press table, and a scale mounted movably on said pipe.

3. In a dual machine, lathe and drill press parts comprising a bench common to the lathe and to the drill press, a support pipe also common to the lathe and drill press and -adapted to be vertically positioned in the drill press and having a support at its lower end, comprising a lever to raise the support pipe, and a base to receive the pipe.

4. In a dual machine, the combination with a bench, a support-pipe having a longitudinal slot, 9. tailstock having a gage-bar secured there;

to and having a gage-block adapted to engage a or enter said slot to maintain the tailstock from- 5. A combination l athe and drill press in-v cluding a longitudinal support member, a pivoted bracket to slidably receive said member, a head stock fixed to said support at one end, and a counterweight fixed to said support at the other end to counterbalance the weight of said headstock in tilting the bracket and the support member in changing from lathe to drill press.

6. A combination lathe and drill press includinga longitudinal support member, a pivoted bracket to slidably receive said member, a headstock fixed to said support atone end, a counterweight fixed to said support at the other end to counterbalance the weight of said headstock in tilting the bracket and the support member in changing from lathe to drill press, and combination tailstock and drill press table mounted on said support between said bracket and headstock.

7. A combination lathe and drill press including a longitudinal support member, a pivoted terweight fixed to said support at the other end to counterbalance the weight of said headstock in tilting the bracket and the support member in changing from lathe to drill press, and combination tailstock and drill press table mounted on said support'between said bracket and headstock and having means thereon to raise and lower such table to move the work.

8. A combination lathe and drill press including a longitudinal support member, a pivoted bracket to slidably receive said member, a headstock fixed to said support at one end, a counterweight fixed to said support at the other end to counterbalance the weight of said headstock in tilting the bracket and the support member in changing from lathe to drill press, combination tailstock and drill press table mounted on said support between said bracket and headstock and agroove along said support to align said headstock and tailstock. 

